| Term 
 | Definition 
 
        | the development of cartilage |  | 
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        | Term 
 | Definition 
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        | Term 
 | Definition 
 
        | formation of the embryo, which leads to fetal development |  | 
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        | Term 
 
        | What does the skeleton form from during embryogenesis? |  | Definition 
 
        | mesoderm and the neural crest |  | 
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        | Term 
 
        | What does mesoderm form from during embryogenesis? |  | Definition 
 | 
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        | Term 
 
        | What does mesoderm turn into during embryogenesis? |  | Definition 
 
        | embryonic connective tissue (mesenchyme) |  | 
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        | Term 
 
        | Which of the bone cells are multinucleated? |  | Definition 
 | 
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        | Term 
 
        | What do all species in Phylum Chordata have as an embryo? |  | Definition 
 | 
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        | Term 
 | Definition 
 
        | a temporary endoskeleton for a soft-bodied embryo |  | 
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        | Term 
 
        | What makes an animal a chordate? |  | Definition 
 
        | has a notochord, post-anal tail, pharyngeal arches and flits, thyroid gland, endoskeleton, singular tubular dorsal hollow fluid-filled nerve chord |  | 
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        | Term 
 
        | What are pharyngeal arches and flits? |  | Definition 
 
        | openings that develop right behind the head. Become gills in fish and tadpoles. In everything else they become part of the head and neck. |  | 
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        | Term 
 
        | What do animals in the sub-phylum vertebrata need to have? |  | Definition 
 
        | vertebral column in their endoskeleton, enclosed circulatory system, very distinct head |  | 
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        | Term 
 
        | What makes up the axial skeleton? |  | Definition 
 
        | skull, vertebral column, sternum, ribcage, hyoid bone |  | 
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        | Term 
 
        | What makes up the appendicular skeleton? |  | Definition 
 | 
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        | Term 
 
        | What is heteroproning? What are the results? |  | Definition 
 
        | When genes don't turn off. People end up with tails or extra fingers/toes |  | 
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        | Term 
 | Definition 
 
        | In vertebrates it's  masses of mesoderm distributed along the two sides of the neural tube and that will eventually become dermis, skeletal muscle, and vertebrae |  | 
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